#population aging

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A row of document scanners mid-feed with one paper census form caught curling upward off the tray, archival shelving of bound ledgers receding behind

Comparing the Main Approaches to Demography, Migration, and Urban Futures

Census counts, UN cohort-component models, and migration surveys answer different questions about population change—coverage, projection, and motive—and comparing them on their own terms beats picking a winner.

By Brecht Corbeel · September 10, 2026 · 15 min read

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